Cardiac Disability and Death Caused by Strain: Problem in Workmen's Compensation

Abstract

tients die in the wards and the delay in instituting treat¬ ment, in general, mitigate against success. In the 13 instances of totally unexpected cardiac arrest in the operating room, 7 patients (including one with ventricu¬ lar fibrillation) have been successfully resuscitated. In the six cases of ventricular fibrillation occurring during di¬ rect attacks on the heart, all hearts were defibrillated but only three of these patients survived.

The Cardiovascular Dynamics of Bowel Function

“…The heart rate during defecation was studied concomitantly with the blood pressure changes in the groups previously described in table 3 and figure 5. With the onset of straining (phase I), the pulse rate was unchanged in virtually all instances of our series and only 6 of the more than 400 strain episodes indicated some speed-up.…”

“…The distribution of these peaks was comparable in both groups, when they occurred. 5. The Valsalva maneuver initiated electrocardiographic changes in approximately 20 per cent of the normal subjects studied.…”

“…The Effects of Straining on the Electrocardiogram The possible effects on the myocardium of the straining efforts associated with defecation are of particular interest because of the decrease in FIG. 5. The incidence and distribution of the systolic &dquo;overshoot&dquo; observed during phase IV of the Valsalva maneuver.…”